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Old 04-08-2003, 11:08 PM   #1
bahboy20
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Member#: 6726
Join Date: May 2001
Location: DC/MD/VA
Vehicle:
2002
PSM

Default gaskets when installing catback

hey guys, i am prolly going to be installing a apexi n1 catback off a 2000/2001 RS.

My question is, I will need to get gaskets (2). Do I need to know anything special about the exhaust, or are gaskets generic? Do I need a special size?

Also, I read on here, the first thing to do when doing an exhaust install is to wd40 the bolts. Will I need to replace the bolts too?

I am new at this and am just tryign to see what I can expect.

thanks,
dan
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Old 04-09-2003, 01:53 AM   #2
Michael Low
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1999 Impreza 2.5 RS
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yeah i have an APEX I n1 cat back exhaust. unless its a used setup, it should come with gaskets and bolts you can use. You shouldnt use your stock gaskets becuase the inner diameter of the opening of the gasket is too small. it is better for you to buy new gaskets. if you are buying a used system go to a muffler shop and buy some new ones (with larger innner diameter openings) and when you are taking off your stock setup use wd40 or penetrating lubricant and let it sit for a good 20 min. then getting the rusted nuts off will be easier. save time and bloody knuckles.
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Old 04-09-2003, 02:05 AM   #3
bahboy20
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Default what type

yeah, itsa used catback.
what type of gasket do i need to buy, is there a special size?
Is it the type of thing I can order online (if so, where)??

In terms of bolts I guess I gotta get new bolts, anything special there, or just something i can get from a hardware store?

anything else i should know about installing an N1?


thanks man

dan
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Old 04-09-2003, 06:11 PM   #4
marioej18
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Chapter/Region: Tri-State
Location: northeast PA
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2004 saab 9-3 aero
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whatever you do, do not order gaskets online!!! your best bet on finding the right gaskets is to actually take the exhaust system to a muffler shop and have them find you the right size gaskets. this will save you a lot of time and money. the gasket that connects to the converter does not have to be a bigger gasket like everyone says it does, the apexi is designed to fit STOCK exhaust systems. i konw this because i bought a cat back that was designed for an RS but i put it on my 1.8L impreza L using a stock sized gasket. you won't have to look around and do guessing games as to what size gasket you need for the system. go to a muffler shop, tell them that you need a donut gasket that connects to the converter for whatever kind of car you have, and they will know exactly what you are talking about. but, your best bet, if possible, is to actually take the whole system to the muffler shop and get the right gaskets.

oh yeah, and the bolts can be any kind from any hardware store, as long as they are at least grade 5 bolts.
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